Paper plastic composite bags are widely used in a wide range of application fields and play an important role in the packaging and transportation of goods. The development of paper plastic composite bag industry is so good that it is inseparable from the four design principles of paper plastic composite bags.

1、性；主要指纸塑复合袋的强度。在设要根据货物的密度(通过货物的密度可以计算出超经济合理的集装袋大小)和状态(粉状需要防漏，颗粒状不用防漏)，盛载物重量, 还要考虑运输距离的远近和搬运次数的多少，采用何种运输工具和运输方法。

1. Safety; It mainly refers to the strength of paper plastic composite bag. The design shall be based on the density of the goods (the super economical and reasonable container bag size can be calculated through the density of the goods) and the state (the powder needs to be leak proof, and the granular does not need to be leak proof), the weight of the load, the distance of transportation, the number of handling times, and the means and methods of transportation to be adopted.

2、密封性；包装物料不同，密封要求不同。如粉料或有毒物品、怕受污染的物品对密封性能要求非常严格, 容易受潮或霉变的物料对气密性也有特殊的要求。

2. Tightness; Different packaging materials have different sealing requirements. For example, powder or toxic substances and substances afraid of pollution have very strict requirements on sealing performance, and materials prone to moisture or mildew also have special requirements on air tightness.

3、使用性；在设计纸塑复合袋时， 要充分考虑客户使用集装袋的具体方式和方法， 如提吊、运输方式、装载物料性能等。

3. Usability; When designing paper plastic composite bags, we should fully consider the specific ways and methods of customers using container bags, such as lifting, transportation mode, loading material performance, etc.

4、保管性；应根据用户的使用条件，合理的选用材料，合理的配比。塑料制品在阳光暴晒下的方老化能力是目前比较关注的问题，也是纸塑复合袋在实际使用过程中经常遇到的问题。

4. Safekeeping; Materials shall be reasonably selected and proportioned according to the user's service conditions. The aging ability of plastic products in the sun is a problem of concern at present, and it is also a problem often encountered in the actual use of paper plastic composite bags.

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The above is the knowledge brought to you today. Jinan composite bag has focused on the industry for many years and continuously provides users with valuable content. Please continue to pay attention to us for more content: //www.haaimobile.com